Lifeboat Foundation

China’s latest work on QC.

If early mechanical computers were never introduced to expand people’s computing ability, the invention of the atomic bomb would have gone out the window, and human history would have been rewritten.

This highlights the significance of computer simulation in scientists’ exploration of the physical world, which also explains their strong motivation in continuously pursuing higher computing power.

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In Brief:

• Normally formation happens in attoseconds and an attosecond is to a second what a second is to about 31.71 billion years.
• Further study of the particle could lead to quantum processors and ultra-fast electronics.

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link “People have already built small quantum computers,” says Sandia researcher Ryan Camacho. “Maybe the first useful one won’t be a single giant quantum computer but a connected cluster of small ones.”

Distributing quantum information on a bridge, or network, could also enable novel forms of quantum sensing, since quantum correlations allow all the atoms in the network to behave as though they were one single atom.

The joint work with Harvard University used a focused ion beam implanter at Sandia’s Ion Beam Laboratory designed for blasting single ions into precise locations on a diamond substrate. Sandia researchers Ed Bielejec, Jose Pacheco and Daniel Perry used implantation to replace one carbon atom of the diamond with the larger silicon atom, which causes the two carbon atoms on either side of the silicon atom to feel crowded enough to flee. That leaves the silicon atom a kind of large landowner, buffered against stray electrical currents by the neighboring non-conducting vacancies.

The world of quantum computing is a minefield. The more scientists think they know about it, the more they realize there’s so much more to learn. But, with thanks to physicists in a laboratory in Canberra, we are that one step closer to seeing a real life working quantum computer as they managed to freeze light in a cloud of atoms. This was achieved by using a vaporized cloud of ultracold rubidium atoms to create a light trap into which infrared lasers were shone. The light was then constantly emitted and re-captured by the newly formed light trap.

Researchers at the National Institute of Information and Communications Technology, in collaboration with researchers at the Nippon Telegraph and Telephone Corporation and the Qatar Environment and Energy Research Institute have discovered qualitatively new states of a superconducting artificial atom dressed with virtual photons.

The discovery was made using spectroscopic measurements on an artificial atom that is very strongly coupled to the light field inside a superconducting cavity. This result provides a new platform to investigate the interaction between light and matter at a fundamental level, helps understand quantum phase transitions and provides a route to applications of non-classical light such as Schrödinger cat states.

It may contribute to the development of quantum technologies in areas such as quantum communication, quantum simulation and computation, or quantum metrology.

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For the first time, scientists have observed the formation of quasiparticles — a strange phenomenon observed in certain solids — in real time, something that physicists have been struggling to do for decades.

It’s not just a big deal for the physics world — it’s an achievement that could change the way we build ultra-fast electronics, and could lead to the development of quantum processors.

But what is a quasiparticle? Rather than being a physical particle, it’s a concept used to describe some of the weird phenomena that happen in pretty fancy setups — specifically, many-body quantum systems, or solid-state materials.

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Paddy Neumann kind of looks like someone who’s really into brewing beer. But back when he was a third year student at the University of Sydney, the now Dr. Neumann started on a course of experimentation that would see him beat innovations by NASA’s top scientists.

For his final research project, Neumann was working with the university’s plasma discharge, mapping the electric and magnetic charges around it. He noticed the particles moving through the machine were going really fast. In fact, they were clocking in at around 14 miles per second.

“I looked at my numbers from that final year project and thought, You could probably make a rocket out of this,” he says. Particularly when you consider that conventional hydrogen-oxygen rockets only get around 2.8 miles per second.

Continue reading “How an Australian College Student Did What NASA Couldn’t” »

In Brief.

The ESA’s Rosetta comet orbiter has found complex, solid organic molecules in dust particles that came of the comet 67P/Churyumov-Gerasimenko, lending credence to the theory that organic compounds, or even life itself came from the stars.

Over the past few months, the ESA’s Rosetta orbiter has been feeding us valuable data on comets: where they come from, what they’re made of, how they work, and so on. But its time is nearly at an end, with a kamikaze dive towards the surface of comet 67P/Churyumov-Gerasimenko scheduled for later this month.

Continue reading “First-Ever Discovery: Complex Organic Molecules Found on Rosetta’s Comet” »

Single neutral atoms trapped individually in optical microtraps are incredibly useful tools for studying quantum physics, as the atoms then exist in complete isolation from the environment. Arrays of optical microtraps containing single atoms could enable quantum logic devices, quantum information processing, and quantum simulation.

While single atom trapping has already been achieved, there are still many challenges to overcome. One such challenge is making sure each trap holds no more than one atom at a time, and also keeping it there so it won’t escape. This requires uniform optical microtraps, which have yet been fully realized.

Now, Ken’ichi Nakagawa and co‐workers at the University of Electro‐Communications, Tokyo, Japan, together with scientists across Japan and China, have successfully demonstrated an optimization method for ensuring the creation of uniform holographic microtrap arrays to capture single rubidium (87Rb) atoms.

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